man i had the same prob with mine have gone to a smaller scale in a closet with sliding doors.It is devided in the midle,i managed to get some ducting squeesed between the door to the other end and out have to leave the end door open slightly,put a small fan in the ducting.i have a fan ducting i8n and out but as long as u can get one out this should help.Remember high temps r ok if u have the humidity to go with it.mine wre geting upto 39c but managed to get the top temp down to around28c.Anyway hope i have helped a bit happy growing.....